Key cylinder and method for assembling a key cylinder
AssigneeKabushiki Kaisha Tokai Rika Denki Seisakusho
InventorsToshiharu Katagiri, Naokatsu Okamura, Yoshinobu Oyabu
Life of this patent
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Abstract
A key cylinder selectively locks and unlocks a lock mechanism. The key cylinder has a rotor and a lever. The rotor is rotated by a key. The lever connects the rotor to the lock mechanism. The key cylinder has a recess formed in an end of the rotor. An end portion of the lever fits in the recess. A cushion is located between the basal end of the lever and the recess. The cushion holds the lever such that an axis of the lever and an axis of the rotor forms an angle within a predetermined range of angles.
Claims17
A key cylinder for selectively locking and unlocking a lock mechanism, wherein the key cylinder has a rotor capable of being rotated by a key, and a lever for connecting the rotor to the lock mechanism, the key cylinder comprising:
- a recess formed in an end of the rotor, wherein an end portion of the lever fits in the recess;
- and
- a holder located between the end portion of the lever and the recess, wherein the holder holds the lever such that an axis of the lever and an axis of the rotor forms an angle within a predetermined range of angles.
A key cylinder comprising:
- a rotor case;
- a rotor located in the rotor case, an engagement portion being formed in the rotor, wherein the rotor is rotated in accordance with an operation of a key;
- a back spring located about the rotor case, wherein an end portion of the back spring engages within the engagement portion;
- and
- a guide portion formed in an end portion of the rotor, wherein, when the rotor is attached to the rotor case, the guide portion guides the end portion of the back spring to the engagement portion.
An assembly method of a key cylinder including:
- mounting a back spring to a rotor case;
- and
- inserting a rotor, which rotates in accordance with an operation of a key, into the rotor case, wherein at least one of an end portion of the back spring is guided to an engagement portion, which is formed in the rotor, along a guide portion of the rotor.
A lever unit forming a part of a key cylinder and having a first lever, wherein the lever unit is located between a rotor of the key cylinder and a lock mechanism, wherein the rotor has a mounting portion, which can mount another lever having a different structure from that of the first lever, the lever unit comprising:
- an intermediary member mounted on the mounting portion, wherein the first lever is connected to the intermediary member.
A key cylinder for selectively locking and unlocking a lock mechanism, the key cylinder comprising:
- a rotor, wherein the rotor is rotated in accordance with an operation of a key;
- and
- a lever unit having a first lever, wherein the lever unit is located between the rotor and the lock mechanism, wherein the rotor has a mounting portion, which can mount another lever having a different structure with that of the first lever, wherein the lever unit includes an intermediary member mounted on the mounting portion, and wherein the first lever is connected to the intermediary member.
Dependencies are inferred from the claim text.